I am going to give you some tips that you can use to improve your bowling game drastically, go ahead and give them a try.
Keep that arm swing loose
Remember first and foremost, keep your grip relaxed in the ball. To avoid the muscled arm swing don’t squeeze your fingers or thumb. To avoid this it’s best to head down to a pro shop and get a ball fitted and drilled correctly so you can have a relaxed thumb. Like I said, you don’t want to have to squeeze the ball because your thumb doesn’t fit.
Finish close to the foul line
The closer you are to the foul line the less energy you will have to use. When you’re all the way up to the foul line, you’ll want to have the ball a short distance over the foul line, which will result in the ball making contact with the lane further down and it’ll preserve energy so you can knock down all the pins. The further you are from the foul line the more energy you will have to use.
Relax your thumb and come through with the ball
If you over lift, or turn the ball during the release it will cause muscling or misdirection of your arm swing. So remember relax your thumb and release the ball with the free arm swing, finish close to the foul line and make sure you have good lower body leverage.
Bowling is all in the mind!
Visualize the lanes in your mind, define your good shots and do them until they’re near perfection.
The drop off method
Instead of pushing the ball away, hold the ball up at the shoulder level then take a small step but do not move the ball just let it drop down into the swing on the second step.
Come up with your own style
Whatever you think helps you make your game better and gets you high scores, then by all means use it. Apply the techniques that work for you.